https://bugzilla.kernel.org/show_bug.cgi?id=60519
Bug ID: 60519
Summary: Wrong battery information reported on Samsung NP540U3C
Product: ACPI
Version: 2.5
Kernel Version: 2.6.34 and newer
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Battery
Assignee: acpi_power-batt...@kernel-bugs.osdl.org
Reporter: jan.christian.hoffm...@gmail.com
Regression: Yes
Created attachment 106809
--> https://bugzilla.kernel.org/attachment.cgi?id=106809&action=edit
Output of acpidump
The battery information reported in sysfs is wrong since kernel 2.6.34. In
older versions the information is correct.
The affected device is a Samsung NP540U3C. The output of acpidump is attached.
These are the contents of /sys/class/power_supply/BAT1/uevent:
Correct information on 2.6.33:
POWER_SUPPLY_NAME=BAT1
POWER_SUPPLY_TYPE=Battery
POWER_SUPPLY_STATUS=Full
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=7500000
POWER_SUPPLY_VOLTAGE_NOW=8638000
POWER_SUPPLY_CURRENT_NOW=0
POWER_SUPPLY_CHARGE_FULL_DESIGN=6890000
POWER_SUPPLY_CHARGE_FULL=6800000
POWER_SUPPLY_CHARGE_NOW=6800000
POWER_SUPPLY_MODEL_NAME=
POWER_SUPPLY_MANUFACTURER=SAMSUNG Electronics
POWER_SUPPLY_SERIAL_NUMBER=
Wrong information on 2.6.34:
POWER_SUPPLY_NAME=BAT1
POWER_SUPPLY_TYPE=Battery
POWER_SUPPLY_STATUS=Unknown
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Unknown
POWER_SUPPLY_CYCLE_COUNT=204
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=1000
POWER_SUPPLY_VOLTAGE_NOW=8638000
POWER_SUPPLY_CURRENT_NOW=0
POWER_SUPPLY_POWER_NOW=0
POWER_SUPPLY_ENERGY_FULL_DESIGN=1000
POWER_SUPPLY_ENERGY_FULL=6890000
POWER_SUPPLY_ENERGY_NOW=6800000
POWER_SUPPLY_MODEL_NAME=
POWER_SUPPLY_MANUFACTURER=LION
POWER_SUPPLY_SERIAL_NUMBER=
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